Two-speed gearing.



WW aw A. A. OLSON.

TWO SPEED GEARING.

APPLICATION FILED JAIL31, 191a.

Patented June 9, 1914.

2 SHEETS-SHEET 1.

A. A. OLSON, TWO SPEED GBARING.

APPLICATION FILED JAKJ31, 1913. 1,099,464. Patented June 9,1914

' 2 SHEETS-411E121 2.

witnesses AXES A. OLSON, 0F HERNDOIL'KANSAS.

TWO-SPEED GEARING.

Specification of Letters Patent.

' Patented June 9, 1914.

Application filed January a1, 1913. Serial in. 745,503.

To all whom it may concern Be it known that I, AMEs A. OLSON, a citizenof the United States, residing at Herndon, in the county of Rawlins,State of Kansasyhave invented certain new and useful Improvements inTwo-Speed Gearing; and I do hereby declare the following to be a full,clear, and exact. description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to clutches for motorcycles and has for an objectto provlde a two-speed clutch that will be composed of a few number ofsimple parts that will not easily get out of order.

A further object of the invention is to provide a two-speed clutch thatwill be light and strong and will be effective in operation under allconditions of service.

With the above objects in view the invention consists of certain noveldetails of construction and combination of parts hereinafter fullydescribed and claimed, it being understood that various modificationsmay be made in the minor details of constructionwithin the scope of theap ended claims.

In the accompanying rawings formlng part of this specification :--Figure1 1s a side elevation of the clutch. Fig. 2 1s an end elevation of'theclutch. Fig. 3 is a vertical cross sectional view through the clutch.Fig. 4 is a rear view of the pulley. Fig. 5 is i a detail perspectiveview of the-clutch disk.

Fig. 6 is a detail perspective view of the base block. 7 is a detailperspective view of the shi ng ring. Fig. 8 1s a detail perspective viewof the pulley.

Referring now to the drawings in which like characters of referencedesignate simi 1211' parts, 10 designates a base'block which is providedwith marginal perforated lugs 11 through which screws 12 are passed forsecuring the block to the motor or machine. The block is provided with acentral opening 13 to loosely receive the motor shaft 14 and is furtherformed with an annular flange 15 which is internally provided with screwthreads 16. A friction ring 17 of leather or other suitable material isfixed to the block in concentric relation to the opening 13 and flange15.

A pulley 18 is loosely mounted on the free end of the shaft and is heldin position by retaining nuts 19, this pulley having a grooved periphery20 to receive the driving belt of the machine. The pulley is provided inthe inner face with internal gear teeth 21. A friction rin 22 isarranged on the inner face of the pu ley outside of the gearv teeth.

A clutch disk 23 is revolubly and slidably mounted on the shaft 14 andis provided on one face with a friction'ring 24 adapted to contact withthe base block friction ring 17 and on the opposite face with a frictionring 25 adapted to contact with the friction ring 22 of the pulley. Theclutch disk is provided with a circular series of pins 26 which projectinto the pulley and are equipped with loose pinions 27 that mesh withthe gear teeth of the pulley. The friction disk is further provided witha second clrcular series of pins 28 which are equipped with loosepinions 29 that mesh with the pinions 27 and also mesh with a drivingear 30 that is fixed to the shaft 14. This construction is best shownin Fig. 4.

A shifting ring 31 is provided with external screw threads 32 to engagewith the screw threads 16'of the base block flange and is equipped withan operating lever 33 adapted to rotate the ring. The ring is provided0n the inner face with a flange 34 that PIOjGOtS between the clutch disk23 and block 10 and is formed with a shoulder 35 which forms a ball racefor. ball bearings 36 that are disposed between and bear upon the clutchdisk and shifting ring flange as shown in Fig. 3. The clutch flan e issecured to the shifting ring by means 0 a retaining ring 37 which fitswithin the shifting. ring and is secured to the latter by means of pins38 passed through the retaining ring and into the flange 34 of theshifting ring. The re taining ring is provided with a flange 39 thatengages with the edge of a eripheral flange 40 formed on the clutch diskand further engages with the peripheral edge of the driving ulley 18 tokeep out dust.

W ien the operating lever 33is rocked in one direction the shifting ringwill be backed out of the threaded base block flange and will carry theclutch disk outwardly until the friction rings of the clutch disk andpulley intimately contact. The clutch disk is now locked to the pulleyand turns the latter at the same speed as the shaft 14 is turning. Whenthe operating lever 33 is rocked in the opposite direction the shiftingring will be screwed into the threaded base block flange until' thefriction rings of the clutch disk and of the base block intimatelycontact, whereupon the clutch disk will be held stationary. The gear onthe shaft 14 now rotates the pinions 29 and 27 and pulle 18. The speedof the shaft will be stepped down in this position of the parts so thatthe driving pulley will rotate at ya considerably slower speed than theshaft.

From the above description it will be seen that I have provided anextremely durable and simple two-speed clutch which will be effective inoperation under various conditions of service.

What is claimed, is

1. The combination of a driving shaft, two frictional members, one ofsaid members being stationary and the other being revolubly andshiftably mounted on said shaft, a; pulley on said shaft having aninternal gear, a shifting means having a screw thread connection withsaid stationary member and engaging said shiftable member, and adaptedto be rotated to shift said shiftable member selectively into engagementwith said pulley or said fixed member, a fixed gear on said shaft, and atrain of meshing idler gears carried by said shiftable member meshingwith and forming a speed reducin mechanism between said gear and said puey ear.

2. The combinatlon with a drivin s aft, of two friction members, one ofsai members being stationary u on and the other being revolubly and shiably mounted upon said shaft, a pulley on said shaft having an internalgear, an annular shifting means having an external screw threadconnection with said stationary member and having internal flangesengaging with opposite sides of said shiftable member, a lever connectedto said shifting -means for rotating said means whereby to shift saidshiftable member selectively into engagement with said pulley or saidfixed member, a fixed gear on said shaft disposed within said pulley,and a train of meshing idler gears carried upon said shiftable membermeshing with and forming a speed reducing mechanism between said fixedgear and the internal gear 14 of said pulley.

In testimony whereof, I aflix my signature, in the presence of twowitnesses.

AMES A. OLSON.

Witnesses-z F. H; Daa'rn, A. J. Bmmnme.

